Really nice game, and plenty of it is free. Guys, there's nothing wrong with offering more game for a few bucks, as long as the free chunk of the game they upload stands on its own as a good game. This one does. Nice game.
Also the puzzles and trivia are completely lame. How many buckets of water can you fill with this much water? It's like the lame edutainment games that try to trick kids into thinking they're having fun while they learn middle school math. Lame.
On its own, not a terrible game. It's very simple, I can see why people enjoy it. But the begging for money thing is just lame. It's not good enough to spend anything on. If you want a game that's worth money, document the skills, make a lot of different skills (not just "Another attack that hits harder"), balance the classes, and add animations, sound, etc. Yes, it's a lot of work to make a game worth playing. Taking a cheap game and putting a limiting factor (energy) on it that players have to buy their way out of is a recipe for looking like a jerk, not for building a fan base.
Man, I liked this game, I just wish there were some way to add it to my site. You should totally make that more prominent, if that option is even available. Like, make it in the obvious place where people reflexively click for the next level, so a ton of people accidentally click it with no intention of adding it to their site. That would be awesome.
So until you buy bombs, all you do is press right and then watch? All the best ones in this genre (learn to fly, turtle launch, etc) give you something to do right from the start. Kind of dull.
More problems. If you purchase the wrong upgrades midway through the game you are totally screwed, need to be able to change upgrades around or replay earlier levels so you don't have to start from scratch. Also, the upgrade from the midboss is hard to use: it can drift off the screen, and changes the type quickly enough that you sometimes get the wrong one because your ship doesn't move very quickly. A window that pops open and asks you what to upgrade would work better. I really like the look of the game, wanted to like playing it, but I just can't.
Also the way your ship follows the mouse is klunky. It slows down as it gets close to the mouse, which means that if you quickly move your mouse a small distance, your ship lags a lot, which is a big problem for a game with a lot of fine movements for avoidance like this one.
Nice game killed by a bad cash system. You get a constant 1-1.5k per level. In games where you get more cash later on, buying an early upgrade is a good way to increase your ability to get cash, so it's a good investment. But here you never increase your cash flow, so you just hold out for the max upgrades. So basically the middle upgrades are dead, which kills most of the upgrade system, which kind of kills the game.
Cool idea, repetitive to play. The enemies are only different in their projectiles, but you interact with them all the same: absorb the projectile, run to a bunch of enemies, release, repeat. An update to this with different types of shots that do different things when you absorb/release them, so you have to pay attention to what you're absorbing, might be interesting.